<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
    <el-header>
        <div>
            <img src="~assets/logo.png" alt="">
            <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出</el-button>
        
    </el-header>
        <!-- 页面主题区域 -->
    <el-container>
        <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区 -->
      <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      :unique-opened='true'
      :collapse='isCollapse'
      :collapse-transition='false'
      :router="true"
      :default-active='activePath'>
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path+''" 
        v-for="subItem in item.children" 
        :key="subItem.id"
        @click="saveNavState('/'+subItem.path)">
             <!-- 二级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
        <!-- 右侧内容主题 -->
    <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
    </el-main>
    </el-container>
    </el-container>
</template>

<script>
export default {
  components: {},
  props: {},
  data() {
    return {
        menulist:[],
        iconObj:{
            '125':'iconfont icon-user',
            '103':'iconfont icon-tijikongjian',
            '101':'iconfont icon-shangpin',
            '102':'iconfont icon-danju',
            '145':'iconfont icon-baobiao'
        },
        // 是否折叠
        isCollapse:false,
        // 被激活的链接地址
        activePath:''
    };
  },
  watch: {},
  computed: {},
  methods: {
      logout() {
          window.sessionStorage.clear()
          this.$router.push('/login')
      },
      async getMenuList() {
          const {data : res} = await this.$http.get('menus')
          if(res.meta.status !==200) return this.$message.error(res.meta.msg)
        //   console.log(res);
          this.menulist=res.data
        //   console.log(this.menulist);
      },
    //   点击按钮切换菜单折叠与展开
      toggleCollapse() {
          this.isCollapse=! this.isCollapse
      },
    //   保存链接的激活状态
    saveNavState(activePath) {
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
        
    }
  },
  created() {
      this.getMenuList()
      this.activePath=window.sessionStorage.getItem('activePath')
      
  },
  mounted() {}
};
</script>
<style  scoped>
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-size: 20px;
}
.el-header div {
    display: flex;
    align-items: center;
    
}
.el-header img{
    margin: 15px;
    width: 30px;
    height: 30px;
}

.el-aside{
    background-color: #333744;
}

.el-main{
    background-color: #eaedf1;
}

.home-container{
    height: 100vh;
}

.iconfont {
    margin: 10px;
}
.el-menu{
    border-right: none;
}

.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>